What is the test for determining whether a probationer wilfully violated his probation?

Where the trial court resolves conflicting evidence to determine whether a probationer willfully violated probation, review on appeal is based on the substantial evidence test. (People v. Kurey (2001) 88 Cal.App.4th 840, 848.) "Under that standard, our review is limited to the determination of whether, upon review of the entire record, there is substantial evidence of solid value, contradicted or uncontradicted, which will support the trial court's decision." (Ibid.) We find there is substantial evidence supporting the trial court's findings that defendant violated his probation.

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